Swift is a programming language, originally created by Apple, or more specifically, by a team of developers led by Chris Lattner at Apple.
At first, it was entirely aimed at Apple's own development eco-system but was made an open-source project in 2015 and, as such, is being developed, not only for Apple platforms but, also, for others like Linux and maybe even Windows.
These discussion forums are part of that open source project. They are not here for the discussion on how to use Swift for macOS or iOS. For that, you need to look at the Apple developer forums; particularly for help with the Swift language, you should go to Apple Developer Forums. You can also find help with the various frameworks from the main welcome page I mentioned in my last post.